package collection;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionOperDemo {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1"+c1);

        Collection c2 = new ArrayList();
        c2.add("android");
        c2.add("ios");
        c2.add("java");
        System.out.println("c2"+c2);

        c1.addAll(c2);
        System.out.println("c1"+c1);
        System.out.println("c2"+c2);

        Collection c3 = new ArrayList();
        c3.add("c++");
        c3.add("android");
        c3.add("php");
        System.out.println("c3"+c3);

        boolean contains = c1.contains(c3);
        System.out.println("是否包含:"+contains);

        //取交集：c1中仅保留与c3所共有的元素，而c3不变
       /* c1.removeAll(c3);
        System.out.println("c1:"+c1);
        System.out.println("c3:"+c3);*/

        //删交集：将c1中与c3共有的元素删除。充c3不变
        c1.containsAll(c3);
        System.out.println("c1"+c3);
        System.out.println("c3"+c3);
    }
}
